Insulator



Feb. 27, 1923. 1,446,523

L. STEINBERGER INSULATOR Filed Feb.-14, 1919 9/ l XM f l @VE/wol? Patented lieb. 27, 1923.

1,446,523 UNITED STATES PATENT OFFICE.

LOUIS S].`Ili.lI1\TBERGER, OF BROOKLYN, NEW YORK INSULATOR.

Application filed February 14, 1919. SeriarNo. 276,902.

To al! 'uf/wm, 'it may conce/rn.:

Be it linown that I, LoUis S'rmNisE-RGER, a citizen of the United States, and a resident ot' the borough or Brooklyn, city and State of New York, have invented certain new and useful Improvements in Insulators, of which the following is a specification.

My invention relates generally to insulators and more particularly to improved means for Securing hollow strain members to strain or suspension insulators, and line securing means toline or pin insulators.

The object of my invention is to provide chambered strain members or protruding caps in combination with means for readily securing them in place upon the insulator body so constructed that the securing means may be easily and quickly removed. Other objects will appear from the subjoined speciiication and claims.

Referring to the drawings:

Fig. l is a sectionalr view of a line or pin type insulator embodying my invention.

Fig. 2 is a side elevation partly in section of another type of Strain or suspension insulator embodying my invention.

Fig. 3 is a sectionon line 3-3 of Fig. 2.

Fig. 4 is a detail in elevation of the form of chambered strain member shown in Fig. 2. In forming the insulating body I use any suitable insulating material, but I preter to use that material well known in the art as electrose. i

I: have shownin Fig. l a line or pin type insulator of the usual form having projecting flanges 51 and 52 extending from the body 50 and a stud 53 projectin from the upper central portion thereof. n the centralV portion of the body is a screw'- threaded cavity 54 for the reception of and engagement with the supporting pin (not shown).

`The stud 52% vis encased in a metal cover (30 having a groove or seat (il tor the .reception of the lino wire (not shown) and a horizontal groove 62 for the reception of the tie wire (not shown). This metal cover or cap secured to the stud h v the same method and means hereinafter described with respect. to the securing of the. cha mbered strain member in Fig. 2; description of which in the interest otbrevity will suffice Jfor both).

In Fig. 2 sulator 70 of I have shown a suspension indisc type which 1s provided with a bottom strain member Tl olt' the usual form which is Secured to the central poi'- tion ot' the under side ot the insulator body by cement 'T2 as shown, the strain member being of such form and shape that it fits inside the cavity 73, the cavity being wider at the bottom than at its entrance or mouth, so that the cement is more readily retained in the cavity because of the undercut sides, and the wedge shaped portion 74 on the strain member is more effectually secured to the insulator body.

In assembling the insulator, the body portionis first molded into the shape desired and then the chambered strain members or caps are fitted over the studs or projections extending from the sides or ends of the insulator body so that the circumferential groove in the inner surface of the strain member or cap will coincide with the groove in the side wall of the projection. The holding Wire is then placed in this combined groove to lock the metal to the insulation, the construction being such yas to enable ready removal of the locking wire or rod and which will be hereinafterdescribed.

The strain member 75 is provided with two projections 76 and 77 with a bolt hole 7S pass-ing therethrough, Iall for the purposes well understood in this art for securing the insulator to the Support or yto the next adjacent insulator. The strain member 75 of Figs.' 2 to 4 inclusive, and the metal cover of Fig. l is each provided on its inner surface with a circumferential groove 79 and likewise there is agroove 80 formed respectively in the projecting portion of Fig.. 2 and the projecting portion 53 of Fig. l of the insulator body so that .when either the chambered strain member or cap 60 is fitted down over the project-ion 70 or 53 respectively the two grooves will coincide forming a conduit SN). Au elongated passageway 91 is provided in the side of the strain member or cap leading into vthe groove, aud the hottom ot the groove 80 in the insulator body is provided with a raised projection 92, the said projection 92 being ,formed by two in clined surfaces 9? and 94 from the bottom oi the groove S0 meeting to form the apex of the projection'. A wire or lrod fis then forced onto the elongated opening 91 in the chambered strain member or cap and is passed into and around the conduit the wire being of such a length that its ends will each rest rest upon the inclined. surfaces 93 and 9a. The wire when inserted in the conduit or groove 90 will lock the strain member 75 or cap 6() tothe body of insulating material, and the wire may be removed therefrom by inserting aI tool in the groove to engage an end of the wire and forcing the wire to move therein, thereby causing the other end of the wire to be lifted upwards by reason of either one of the inclined surfaces 93 or 942 on the bottoni of tlie'gromfe which form the projection 92. The protruding end of the wire may then be grasped by pincers or by any other suitable means and withdrawn from the groove, thus unlocking the .hollow cap or strain member from the insulator body.

The diameter of the wire is preferably but slightly smaller than the diameter of the conduit or hole 90, as will be readily understood. The purpose ofloclring the hol-low strain member to the insulator body by means of the, wire is that when the insulator is assembled and put into use should it subsequently become injured from any cause whatever, or destroyed, the cap or hollow strain, member maybe readily removed from the insulator body and applied t0 anew insulator.

As changes of construction could be made within the scope of my invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a .limiting sense. l

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

l. ln an insulator of the class described, a body portion of insulating material having a projecting portion provided with a circumferentially extending groove in its peripheral surface the surface of the groove being formed into4 a projection with inclined sides, a hollow cup shaped socket member into which the` projecting portion of said body extends and which member is provided with an internal groove and with an elongated opening in the wall thereof in line with the groove so disposed that the groove of the socket member will register with the groove upon the projecting portion of said body and so positioned that the projection ou the groove of the insulator body will be midway ot the elongated opening in the socket member, and a locking member located within the space provided by said. registering grooves, the ends of the lockingl member registeringv with the elongated opening' whereby said socket member is locked to the projection aforesaid of said body portion and may be readily removed therefrom.

2. In an insulator of the class described, a body portion ot' insulating material having a projecting portion provided with a circun'iferentially extending groove in its peripheral surface, the said groove having a projection therein with inclined sides, a socket member into which the projecting portion of said body extends and which member is provided with an internal groove so disposed as to register with the groove in said projecting portion, and an opening leading into said groove opposite the projection on the surface of the rst mentioned groove, and a single rod or wire located within the space provided by said registering` grooves. the ends of the wire resting upon the sides forming the projection and coinciding with the opening whereby said socket member is removably secured in place.

3. In an insulator of the class described, a body portion of insulating material having a projecting portion provided with a circumferentially extending groove in its periph-- eral surface, the bottom wall of which has a. raised projection provided with twoV in clined surfaces which meet to form the apex oit said projection, a socket member into which the projecting portion of said body extends and which member is provided with an internal groove so disposed as to register with the groove in said projecting portion, and an opening extending into said groove, said opening being located opposite the in clined projection aforesaid in the bottom wall of said groove, and a rod or wire located within the space provided by said registering grooves.

4. In an insulator of the class described, a body portion of insulating material having a projecting portion provided with a circumferentially extending groove in :its periphw eral surface. the wall of said groove being provided with an inclined projection, a hollow Acup shaped socket member .into which the projecting portion of said body extends and which member is provided with an internal groove having an elongated opening in the wall thereof leading into said groove. said groove and opening beingso disposed as to register respectively with the groove and projection aforesaid upon the projecting portion of said body, and a removable locking member located within the space provided by said rcgisterii'ig groovemthe respective ends otisaid locking member resting upon the projection coincident with said opening whereby said. socket member `is ren'iovably locked to the projection aforesaid of said body portieri.

in .vitness whereof, have hereunto set my hand at the borough of Manhattan, city and State of New York, this 7th day of February, 1919.

LOUS ln presence off- C. GBILLLNGS.

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